diff --git a/stringtemplate4.changes b/stringtemplate4.changes
index 8b1c117..cc60ba4 100644
--- a/stringtemplate4.changes
+++ b/stringtemplate4.changes
@@ -1,3 +1,11 @@
+-------------------------------------------------------------------
+Sat Sep 21 15:19:50 UTC 2024 - Fridrich Strba <fstrba@suse.com>
+
+- Modified patch:
+  * stringtemplate4-generated-sources.patch
+    + regenerate to account for latest antlr3 changes
+- Use SOURCE_DATE_EPOCH timestamp for reproducible builds
+
 -------------------------------------------------------------------
 Wed Feb 21 10:54:02 UTC 2024 - Gus Kenion <gus.kenion@suse.com>
 
diff --git a/stringtemplate4.spec b/stringtemplate4.spec
index 75ef9f6..1a07214 100644
--- a/stringtemplate4.spec
+++ b/stringtemplate4.spec
@@ -86,6 +86,7 @@ rm -r test/org/stringtemplate/v4/test/TestEarlyEvaluation.java
 	-j \
 %endif
     -- \
+    -Dproject.build.outputTimestamp=$(date -u -d @${SOURCE_DATE_EPOCH:-$(date +%%s)} +%%Y-%%m-%%dT%%H:%%M:%%SZ) \
 %if %{?pkg_vcmp:%pkg_vcmp java-devel >= 9}%{!?pkg_vcmp:0}
     -Dmaven.compiler.release=8 \
 %endif